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# Supplementary and Complementary Angle Pairs

## Find missing angle measures for supplementary or complementary angles.

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Supplementary and Complementary Angle Pairs

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### Vocabulary Language: English

TermDefinition
Acute Angle An acute angle is an angle with a measure of less than 90 degrees.
Complementary angles Complementary angles are a pair of angles with a sum of $90^{\circ}$.
Obtuse angle An obtuse angle is an angle greater than 90 degrees but less than 180 degrees.
Straight angle A straight angle is a straight line equal to $180^{\circ}$.
Supplementary angles Supplementary angles are two angles whose sum is 180 degrees.

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